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//===- MachOUniversalWriter.h - MachO universal binary writer----*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Declares the Slice class and writeUniversalBinary function for writing a
// MachO universal binary file.
#include "llvm/Object/Archive.h"
#include "llvm/Object/Binary.h"
#include "llvm/Object/MachO.h"
namespace llvm {
class LLVMContext;
namespace object {
class IRObjectFile;
class Slice {
const Binary *B;
uint32_t CPUType;
uint32_t CPUSubType;
std::string ArchName;
// P2Alignment field stores slice alignment values from universal
// binaries. This is also needed to order the slices so the total
// file size can be calculated before creating the output buffer.
uint32_t P2Alignment;
Slice(const IRObjectFile &IRO, uint32_t CPUType, uint32_t CPUSubType,
std::string ArchName, uint32_t Align);
explicit Slice(const MachOObjectFile &O);
Slice(const MachOObjectFile &O, uint32_t Align);
/// This constructor takes pre-specified \param CPUType , \param CPUSubType ,
/// \param ArchName , \param Align instead of inferring them from the archive
/// members.
Slice(const Archive &A, uint32_t CPUType, uint32_t CPUSubType,
std::string ArchName, uint32_t Align);
static Expected<Slice> create(const Archive &A,
LLVMContext *LLVMCtx = nullptr);
static Expected<Slice> create(const IRObjectFile &IRO, uint32_t Align);
void setP2Alignment(uint32_t Align) { P2Alignment = Align; }
const Binary *getBinary() const { return B; }
uint32_t getCPUType() const { return CPUType; }
uint32_t getCPUSubType() const { return CPUSubType; }
uint32_t getP2Alignment() const { return P2Alignment; }
uint64_t getCPUID() const {
return static_cast<uint64_t>(CPUType) << 32 | CPUSubType;
std::string getArchString() const {
if (!ArchName.empty())
return ArchName;
return ("unknown(" + Twine(CPUType) + "," +
Twine(CPUSubType & ~MachO::CPU_SUBTYPE_MASK) + ")")
friend bool operator<(const Slice &Lhs, const Slice &Rhs) {
if (Lhs.CPUType == Rhs.CPUType)
return Lhs.CPUSubType < Rhs.CPUSubType;
// force arm64-family to follow after all other slices for
// compatibility with cctools lipo
if (Lhs.CPUType == MachO::CPU_TYPE_ARM64)
return false;
if (Rhs.CPUType == MachO::CPU_TYPE_ARM64)
return true;
// Sort by alignment to minimize file size
return Lhs.P2Alignment < Rhs.P2Alignment;
Error writeUniversalBinary(ArrayRef<Slice> Slices, StringRef OutputFileName);
Error writeUniversalBinaryToStream(ArrayRef<Slice> Slices, raw_ostream &Out);
} // end namespace object
} // end namespace llvm